diff --git a/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFPictureData.java b/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFPictureData.java
index 3431d1c24..9f705e0e0 100644
--- a/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFPictureData.java
+++ b/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFPictureData.java
@@ -249,6 +249,8 @@ public final class XSLFPictureData extends POIXMLDocumentPart implements Picture
             return PictureType.WPG;
         } else if (XSLFRelation.IMAGE_WDP.getContentType().equals(ct)) {
             return PictureType.WDP;
+        } else if (XSLFRelation.IMAGE_TIFF.getContentType().equals(ct)) {
+            return PictureType.TIFF;
         } else {
             return null;
         }
@@ -267,6 +269,7 @@ public final class XSLFPictureData extends POIXMLDocumentPart implements Picture
             case BMP: return XSLFRelation.IMAGE_BMP;
             case WPG: return XSLFRelation.IMAGE_WPG;
             case WDP: return XSLFRelation.IMAGE_WDP;
+            case TIFF: return XSLFRelation.IMAGE_TIFF;
             default: return null;
         }
     }
diff --git a/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFPictureShape.java b/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFPictureShape.java
index 2d7402f71..95d407a02 100644
--- a/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFPictureShape.java
+++ b/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFPictureShape.java
@@ -32,6 +32,7 @@ import java.util.Map;
 
 import org.apache.poi.POIDataSamples;
 import org.apache.poi.sl.usermodel.PictureData.PictureType;
+import org.apache.poi.util.IOUtils;
 import org.apache.poi.xslf.XSLFTestDataSamples;
 import org.junit.Test;
 import org.openxmlformats.schemas.presentationml.x2006.main.CTPicture;
@@ -193,4 +194,18 @@ public class TestXSLFPictureShape {
         assertTrue(ppt2.getPictureData().isEmpty());
         ppt2.close();
     }
+    
+    @Test
+    public void testTiffImageBug59742() throws Exception {
+        XMLSlideShow slideShow = new XMLSlideShow();
+        final InputStream tiffStream = _slTests.openResourceAsStream("testtiff.tif");
+        final byte[] pictureData = IOUtils.toByteArray(tiffStream);
+        IOUtils.closeQuietly(tiffStream);
+        
+        XSLFPictureData pic = slideShow.addPicture(pictureData, PictureType.TIFF);
+        assertEquals("image/tiff", pic.getContentType());
+        assertEquals("image1.tiff", pic.getFileName());
+        
+        slideShow.close();
+    }
 }
\ No newline at end of file
diff --git a/test-data/slideshow/testtiff.tif b/test-data/slideshow/testtiff.tif
new file mode 100644
index 000000000..99e6bdeb7
Binary files /dev/null and b/test-data/slideshow/testtiff.tif differ